Clock



UNITED STATES PATENT OFFICE.

THEODORE HOLLANDER, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 259,688, dated June 20,1882.

Application filed October 1], 1881.

To all whom it may concern Be it known that- I, THEODORE HOLLANDER, ofChicago, in the county of Cook and State of Illinois, haveinventedcertain new and useful Improvements in Clocks; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being bad to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

The object of this invention is to produce a clock that has a lineargraduated and figured dial over which a single index-hand isreciprocated by a suitable clock-work to show both hours and minutes;audtheinvention consists of the parts and combination of parts, ashereinafter described, and pointed out by the claims.

In the accompanying drawings, Figure 1 represents an elevation of theentire clock; Fig. 2, a front elevation of the wheels and winding-spoolas an attachment to a clock-work that causes the reciprocating movementof the index-hand; Fig. 3, an end elevation of'the same; Fig. 4,alongitudinal section of the winding-spool. Fig. 5 is an enlarged frontelevation of one corner of the dial and of the indexed hand; 6, an endelevation of the indexhand, and Fig. 7 a cross-section of one of thedial-supporting corner-posts.

Like letters represent corresponding parts in all the figures.

A denotes the linear dial-plate, thatis graduated into twelve hours, andeach hour again into sixty minutes, each hour-mark being characterizedby the proper figure in large type. This dial-plate I prefer to make ofglass, that it maybe illuminated at night, if desired.

B B are two columns, between which the dial A is secured. These columnsrise from a box, C, that contains the clockwork. To the upper extremityof each column is secured an eyescrew, a, and between these eye-screwsis stretched a wire, 1), upon which the index-hand D is to ride. Thisindex-hand D is composed ot'a saddle-plate, c, that rests upon the wireI) and has an upwardly-projecting point for attaching a bird or anyother image, and from one side is pending the index-point (1, while fromthe opposite or rear side is pending a clan1p-bar,c, for grasping thethread or cord f. This thread or cord f is guided over sheaves (Nomodel.)

the thread or cord f is passed overa sheave, 7L,

which is journaled inside of the box C, and then is secured to a spoolF. This spool F is of such size that its circumference is equal to thedistance the index-hand has to travel in one hour, so that it will haveto make one revolution during each hour of the day.

G is the clock-work, composed of a motor, train, and regulator of anyusual construction, in which H is the spindle that otherwise would carrythe minute-hand. Upon the projecting portion of this spindle is rigidlymounted a disk, I, having pinion 'i, and upon the end of the spindle isloosely sleeved the spool F, having fixed to one end a small wheel, j,with ratchet-teeth that is in contact with the disk I.

The teeth of the pinion t mesh with the teeth of a wheel, J, that turnsupon a stud projecting from the clock-frame and has connected a pinion,k, and the teeth of this pinion 75 mesh with the teeth of awheel, L,which turns upon another stud that also forms part of the clockframe.

The relative proportions of the wheels 1', J, 7:, and L are such thatwith twelve revolutions of pinion t the wheel L will make onerevolution,which is in correspondence with the twelvehour dial-plate.

Upon the face of disk I is pivoted a pawl, m, that is held in contactwith the teeth of ratchet-wheelj by a spring, a. This pawl at has atail-projection, 0, and to one spoke of the wheel L is secured a stud,p,that will come into contact with the tail-projection 0 of pawl on oncein twelve hours, when by the much more rapid rotation of the diskI thepawl will be disengaged until the pin 1) releases it again. Thisdisengagement of the pawl is but of momentary duration.

The operation of the clock is as follows, to wit: The spool F beingcoupled to the disk I by the pawl m and ratchet-wheel 3, it will rotatewith the spindle H and will wind up the thread or cord j, that will movethe index-hand D over the dial, thereby raising the weight E.

By the time said index-hand has reached the end of the dial-plate, orthe mark that indicates the sixth hour, the wheel L has been rotated tobring the pin 1) in contact with the tail-projection 0, when the pawl atwill be disengaged from the ratchet-wheel j. Now, the spool F is setfree to rotate on the spindle H,

and will be turned in the reverse direction by the weight E sinkingdownward in the column B until the index-hand has been drawn to itscommencing-point that carries the same hourmark as the other end. By thetime this change of position of the index-hand has been completed thetail-projection o of pawl m has passed the pin 10 of wheel L, when thepawl will be engaged again at once with the ratchet-wheel j by theaction of spring a, and the threadf will commence again to be wound uponthe spool F for the next twelve consecutive hours, when again thedisengagement of the pawl is brought about, as before described.

The advantages of a straight dial-plate will be readily understood, onwhich the hours and minutes can be indicated with a certainty by asingle index-hand, and in which all the figures and marks are placed inan upright position, as being easier to read and quicker to understandand recognize.

The dial-plate may be made of any size to suitits position, as long asthe spool F is made of a corresponding diameter, and the dial may be anydesired distance away from the clockwork, as long as theoperating-thread is properly guided by the necessary sheaves to make theconnection.

I am aware that it is not new to construct telegraph-clocks with lineardial-plates and weighted wires to which are attached pointers,

so that on the descent of the weights said pointers shall indicate thehours upon such dial-plates; and such I do not claim.

What I claim is 1. The combination, with a linear dial-plate graduatedin twelve hours, columns or supports B B, and wire I), of a singleindex-hand, D, having index-point (l, saddle-plate c, and clamp-bar 6,weighted thread or cord f, and suitable clock-work, substantially as andfor the purpose set forth.

2. The combination, with the linear dialplate A, of the index-hand D,composed of index-point d, saddle-plate c, and clamp-bar 0, wire I),weighted thread f, sheaves g g, and spool F, rotated by a clock-work,all substantially as and for the purpose set forth.

3. The combination of the linear dial A, posts B B, wire I), index-handD, constructed and adapted to ride upon said wire, as described, andreciprocated by thread or cord f, winding upon the spool F, clock-workG, and weight E, all substantially in the manner described and shown.

4. The combination, with the minute-spindle H, of a clock-work, G,pinion 6, disk I, pawl m, with tail-projection 0, and spring a, spool F,with ratchet-wheel j, and gears J, k. and L, with pin p, allsubstantially as and for the purpose shown and'specified.

In testimony that 1 claim the foregoing as my invention I aftix mysignature in presence of two witnesses.

THEODORE HOLLANDER.

Witnesses:

CHAS. J. Goocrr, RoB'r. BROWN.

